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16690248 = 2332231809
BaseRepresentation
bin111111101010…
…110001001000
31011101221201100
4333222301020
513233041443
61353421400
7261602421
oct77526110
934357640
1016690248
11946a6a3
12570a860
1335c4ab3
142306648
1516ea3d3
hexfeac48

16690248 has 24 divisors (see below), whose sum is σ = 45202950. Its totient is φ = 5563392.

The previous prime is 16690241. The next prime is 16690253. The reversal of 16690248 is 84209661.

It can be written as a sum of positive squares in only one way, i.e., 11573604 + 5116644 = 3402^2 + 2262^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (16690241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 115833 + ... + 115976.

Almost surely, 216690248 is an apocalyptic number.

16690248 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

16690248 is an abundant number, since it is smaller than the sum of its proper divisors (28512702).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16690248 is a wasteful number, since it uses less digits than its factorization.

16690248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231821 (or 231814 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 16690248 is about 4085.3699954839. The cubic root of 16690248 is about 255.5568913464.

The spelling of 16690248 in words is "sixteen million, six hundred ninety thousand, two hundred forty-eight".

Divisors: 1 2 3 4 6 8 9 12 18 24 36 72 231809 463618 695427 927236 1390854 1854472 2086281 2781708 4172562 5563416 8345124 16690248